bsd/net/firewire.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Fundamental constants relating to FireWire network device.
  27  */
  28
  29 #ifndef _NET_FIREWIRE_H_
  30 #define _NET_FIREWIRE_H_
  31
  32 #include <sys/appleapiopts.h>
  33
  34 /*
  35  * The number of bytes in a FireWire EUI-64.
  36  */
  37 #define FIREWIRE_EUI64_LEN              8
  38
  39 /*
  40  * The number of bytes in the type field.
  41  */
  42 #define FIREWIRE_TYPE_LEN               2
  43
  44 /*
  45  * The length of the header provided by the FireWire network device.
  46  */
  47 #define FIREWIRE_HDR_LEN                (FIREWIRE_EUI64_LEN*2+FIREWIRE_TYPE_LEN)
  48
  49 /*
  50  * The minimum packet length.
  51  */
  52 #define FIREWIRE_MIN_LEN                64
  53
  54 /*
  55  * The maximum packet length.
  56  */
  57 #define FIREWIRE_MAX_LEN                4096
  58
  59 /*
  60  * A macro to validate a length with
  61  */
  62 #define FIREWIRE_IS_VALID_LEN(foo)      \
  63         ((foo) >= FIREWIRE_MIN_LEN && (foo) <= FIREWIRE_MAX_LEN)
  64
  65 /*
  66  * Structure of header provided by the FireWire network device.
  67  *
  68  * The device uses a simplified header with just the non-changing
  69  * EUI-64 addresses and ethernet type specified;
  70  */
  71 struct  firewire_header {
  72         u_char  firewire_dhost[FIREWIRE_EUI64_LEN];
  73         u_char  firewire_shost[FIREWIRE_EUI64_LEN];
  74         u_short firewire_type;          /* ethertype */
  75 };
  76
  77 /*
  78  * Format of FireWire EUI-64.
  79  */
  80 struct  firewire_eui64 {
  81         u_char octet[FIREWIRE_EUI64_LEN];
  82 };
  83
  84 /*
  85  * Format of FireWire hardware address.
  86  */
  87 struct firewire_address {
  88     u_char      eui64[FIREWIRE_EUI64_LEN];
  89     u_char      maxRec;
  90     u_char      spd;
  91     u_int16_t   unicastFifoHi;
  92     u_int32_t   unicastFifoLo;
  93 };
  94
  95 #define FIREWIRE_ADDR_LEN       16      /* sizeof(struct firewire_address) */
  96
  97
  98 #define FIREWIRE_MTU    (FIREWIRE_MAX_LEN - FIREWIRE_HDR_LEN)
  99 #define FIREWIRE_MIN    (FIREWIRE_MIN_LEN - FIREWIRE_HDR_LEN)
 100
 101 #endif /* !_NET_FIREWIRE_H_ */